From patchwork Mon Aug 10 13:42:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Ardelean X-Patchwork-Id: 11707475 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 62BB313A4 for ; Mon, 10 Aug 2020 13:42:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 54716207CD for ; Mon, 10 Aug 2020 13:42:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726967AbgHJNmw (ORCPT ); Mon, 10 Aug 2020 09:42:52 -0400 Received: from mx0a-00128a01.pphosted.com ([148.163.135.77]:51960 "EHLO mx0a-00128a01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726894AbgHJNlz (ORCPT ); Mon, 10 Aug 2020 09:41:55 -0400 Received: from pps.filterd (m0167089.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 07ADc5Sw015825; Mon, 10 Aug 2020 09:41:50 -0400 Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0a-00128a01.pphosted.com with ESMTP id 32sry46rgs-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 10 Aug 2020 09:41:50 -0400 Received: from SCSQMBX10.ad.analog.com (scsqmbx10.ad.analog.com [10.77.17.5]) by nwd2mta4.analog.com (8.14.7/8.14.7) with ESMTP id 07ADfmT0061502 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=FAIL); Mon, 10 Aug 2020 09:41:49 -0400 Received: from SCSQMBX11.ad.analog.com (10.77.17.10) by SCSQMBX10.ad.analog.com (10.77.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1779.2; Mon, 10 Aug 2020 06:41:47 -0700 Received: from zeus.spd.analog.com (10.64.82.11) by SCSQMBX11.ad.analog.com (10.77.17.10) with Microsoft SMTP Server id 15.1.1779.2 via Frontend Transport; Mon, 10 Aug 2020 06:41:47 -0700 Received: from localhost.localdomain ([10.48.65.12]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 07ADfY3g030109; Mon, 10 Aug 2020 09:41:42 -0400 From: Alexandru Ardelean To: , , CC: , , , , Mathias Tausen , Alexandru Ardelean Subject: [PATCH v2 4/6] clk: axi-clkgen: Respect ZYNQMP PFD/VCO frequency limits Date: Mon, 10 Aug 2020 16:42:43 +0300 Message-ID: <20200810134252.68614-5-alexandru.ardelean@analog.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200810134252.68614-1-alexandru.ardelean@analog.com> References: <20200810134252.68614-1-alexandru.ardelean@analog.com> MIME-Version: 1.0 X-ADIRoutedOnPrem: True X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-08-10_09:2020-08-06,2020-08-10 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=673 mlxscore=0 lowpriorityscore=0 clxscore=1015 priorityscore=1501 adultscore=0 phishscore=0 suspectscore=0 impostorscore=0 malwarescore=0 spamscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008100101 Sender: linux-fpga-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fpga@vger.kernel.org From: Mathias Tausen Since axi-clkgen is now supported on ZYNQMP, make sure the max/min frequencies of the PFD and VCO are respected. Signed-off-by: Mathias Tausen Signed-off-by: Alexandru Ardelean --- drivers/clk/clk-axi-clkgen.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/clk/clk-axi-clkgen.c b/drivers/clk/clk-axi-clkgen.c index 14d803e6af62..6ffc19e9d850 100644 --- a/drivers/clk/clk-axi-clkgen.c +++ b/drivers/clk/clk-axi-clkgen.c @@ -100,10 +100,17 @@ static uint32_t axi_clkgen_lookup_lock(unsigned int m) return 0x1f1f00fa; } +#ifdef ARCH_ZYNQMP +static const unsigned int fpfd_min = 10000; +static const unsigned int fpfd_max = 450000; +static const unsigned int fvco_min = 800000; +static const unsigned int fvco_max = 1600000; +#else static const unsigned int fpfd_min = 10000; static const unsigned int fpfd_max = 300000; static const unsigned int fvco_min = 600000; static const unsigned int fvco_max = 1200000; +#endif static void axi_clkgen_calc_params(unsigned long fin, unsigned long fout, unsigned int *best_d, unsigned int *best_m, unsigned int *best_dout)